Camp Site GPS update

I may have asked this in the past, but at my advanced age (63) my clutch and memory slips a little. I have a late model tomtom GPS. I like the functions, voice, ways around delays etc, however there has to be an upgrade that does not take a PHD to upgrade and or find a reasonably priced gps that also has camping sites loaded in its software. I have a working knowledge of how it works and it is not impossible to upgrade current GPS units with camping locations. I think I found an update for tomtom but I think its european and is $350.00 that is nuts. Does anyone know of any dedicated gps camping software/units out there. Heck they have self aligning sat t.v. and other modern items. there are a lot of neat little camp grounds in the U.S. most are not known by travelers. there is a private camp ground in crawford county Indiana fairly near our home that we have heard the owner maintains for travelers at no expense. the road is rough and narrow (you need your axle risers folks) beautiful pristine southern indiana hills at no cost, just follow the rules. I bet there are hundreds like this across America.

Someone here recommended this not long ago:  http://www.poi-factory.com/